This kit is frequently used in HP systems, 'Gamila2' is their name for it. The MSI model number is MS-6577, v4.1, which is marked on the board above PCI1 slot. Make sure yours is the right version, as this kit will only work in v4.1. It may work in previous versions, but I have not had one in here to test with.

Kit cost:
Premium Grade - $25.95

Standard shipping is $6.00 Shipping to a US Address, $14.50 to International.